<!DOCTYPE html> <html> <head> <title>set GPS coordinates</title> <script type="text/javascript" src="js/socket.io.min.js"></script> </head> <body onload="sendNotification();"> <?php //The Latitude of Prilep is 41.351730000000000000. //The Longitude of Prilep is 21.562140000000000000. if (isset($_GET['device_id']) && isset($_GET['lon']) && isset($_GET['lat']) && $_GET['lon'] != "" && $_GET['lat'] != "" && $_GET['device_id'] != "") { $lon = $_GET['lon']; $lat = $_GET['lat']; $device_id = $_GET['device_id']; $gps = new GPS($lon, $lat, $device_id); $gps->save(); // insert in DB } else { $lat = $lon = 0; } ?> <div id="latitude" style="display: block;"><?php echo $lat; ?> </div> <div id="longitude" style="display: block;"><?php echo $lon; ?> </div> <script>